diff options
author | Cyrille Bagard <nocbos@gmail.com> | 2023-08-06 16:54:57 (GMT) |
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committer | Cyrille Bagard <nocbos@gmail.com> | 2023-08-06 16:54:57 (GMT) |
commit | 4fcc35a52ccb025b6d803d85e017931cd2452960 (patch) | |
tree | e95920f16c273e41f9cae1ea2f02571c221a514e /src/analysis/scan/items/console | |
parent | 74d062d4ec55d7ac3914bbf64b8b6c5ab52227df (diff) |
Extend the ROST grammar with a first batch of new features.
Diffstat (limited to 'src/analysis/scan/items/console')
-rw-r--r-- | src/analysis/scan/items/console/Makefile.am | 13 | ||||
-rw-r--r-- | src/analysis/scan/items/console/log.c | 303 | ||||
-rw-r--r-- | src/analysis/scan/items/console/log.h | 58 |
3 files changed, 374 insertions, 0 deletions
diff --git a/src/analysis/scan/items/console/Makefile.am b/src/analysis/scan/items/console/Makefile.am new file mode 100644 index 0000000..4433789 --- /dev/null +++ b/src/analysis/scan/items/console/Makefile.am @@ -0,0 +1,13 @@ + +noinst_LTLIBRARIES = libanalysisscanitemsconsole.la + + +libanalysisscanitemsconsole_la_SOURCES = \ + log.h log.c + +libanalysisscanitemsconsole_la_CFLAGS = $(LIBGOBJ_CFLAGS) + + +devdir = $(includedir)/chrysalide/$(subdir:src/%=core/%) + +dev_HEADERS = $(libanalysisscanitemsconsole_la_SOURCES:%c=) diff --git a/src/analysis/scan/items/console/log.c b/src/analysis/scan/items/console/log.c new file mode 100644 index 0000000..f4031c7 --- /dev/null +++ b/src/analysis/scan/items/console/log.c @@ -0,0 +1,303 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * log.c - affichage de message à partir des conditions d'une règle + * + * Copyright (C) 2023 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#include "log.h" + + +#include <ctype.h> + + +#include "../../item-int.h" +#include "../../exprs/literal.h" + + + +/* ---------------------- INTRODUCTION D'UNE NOUVELLE FONCTION ---------------------- */ + + +/* Initialise la classe des affichages de messages. */ +static void g_scan_console_log_function_class_init(GScanConsoleLogFunctionClass *); + +/* Initialise une instance d'affichage de message. */ +static void g_scan_console_log_function_init(GScanConsoleLogFunction *); + +/* Supprime toutes les références externes. */ +static void g_scan_console_log_function_dispose(GScanConsoleLogFunction *); + +/* Procède à la libération totale de la mémoire. */ +static void g_scan_console_log_function_finalize(GScanConsoleLogFunction *); + + + +/* --------------------- IMPLEMENTATION DES FONCTIONS DE CLASSE --------------------- */ + + +/* Indique le nom associé à une expression d'évaluation. */ +static char *g_scan_console_log_function_get_name(const GScanConsoleLogFunction *); + +/* Réduit une expression à une forme plus simple. */ +static bool g_scan_console_log_function_run_call(GScanConsoleLogFunction *, GScanExpression **, size_t, GScanContext *, GScanScope *, GObject **); + + + +/* ---------------------------------------------------------------------------------- */ +/* INTRODUCTION D'UNE NOUVELLE FONCTION */ +/* ---------------------------------------------------------------------------------- */ + + +/* Indique le type défini pour un afficheur de messages arbitraires. */ +G_DEFINE_TYPE(GScanConsoleLogFunction, g_scan_console_log_function, G_TYPE_REGISTERED_ITEM); + + +/****************************************************************************** +* * +* Paramètres : klass = classe à initialiser. * +* * +* Description : Initialise la classe des affichages de messages. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void g_scan_console_log_function_class_init(GScanConsoleLogFunctionClass *klass) +{ + GObjectClass *object; /* Autre version de la classe */ + GRegisteredItemClass *registered; /* Version de classe parente */ + + object = G_OBJECT_CLASS(klass); + + object->dispose = (GObjectFinalizeFunc/* ! */)g_scan_console_log_function_dispose; + object->finalize = (GObjectFinalizeFunc)g_scan_console_log_function_finalize; + + registered = G_REGISTERED_ITEM_CLASS(klass); + + registered->get_name = (get_registered_item_name_fc)g_scan_console_log_function_get_name; + registered->run_call = (run_registered_item_call_fc)g_scan_console_log_function_run_call; + +} + + +/****************************************************************************** +* * +* Paramètres : func = instance à initialiser. * +* * +* Description : Initialise une instance d'affichage de message. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void g_scan_console_log_function_init(GScanConsoleLogFunction *func) +{ + +} + + +/****************************************************************************** +* * +* Paramètres : func = instance d'objet GLib à traiter. * +* * +* Description : Supprime toutes les références externes. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void g_scan_console_log_function_dispose(GScanConsoleLogFunction *func) +{ + G_OBJECT_CLASS(g_scan_console_log_function_parent_class)->dispose(G_OBJECT(func)); + +} + + +/****************************************************************************** +* * +* Paramètres : func = instance d'objet GLib à traiter. * +* * +* Description : Procède à la libération totale de la mémoire. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +static void g_scan_console_log_function_finalize(GScanConsoleLogFunction *func) +{ + G_OBJECT_CLASS(g_scan_console_log_function_parent_class)->finalize(G_OBJECT(func)); + +} + + +/****************************************************************************** +* * +* Paramètres : - * +* * +* Description : Constitue une fonction d'affichage de messages quelconques. * +* * +* Retour : Fonction mise en place. * +* * +* Remarques : - * +* * +******************************************************************************/ + +GScanConsoleLogFunction *g_scan_console_log_function_new(void) +{ + GScanConsoleLogFunction *result; /* Structure à retourner */ + + result = g_object_new(G_TYPE_SCAN_CONSOLE_LOG_FUNCTION, NULL); + + return result; + +} + + + +/* ---------------------------------------------------------------------------------- */ +/* IMPLEMENTATION DES FONCTIONS DE CLASSE */ +/* ---------------------------------------------------------------------------------- */ + + +/****************************************************************************** +* * +* Paramètres : item = élément d'appel à consulter. * +* * +* Description : Indique le nom associé à une expression d'évaluation. * +* * +* Retour : Désignation humaine de l'expression d'évaluation. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static char *g_scan_console_log_function_get_name(const GScanConsoleLogFunction *item) +{ + char *result; /* Désignation à retourner */ + + result = strdup("log"); + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : item = élément d'appel à consulter. * +* args = liste d'éventuels arguments fournis. * +* count = taille de cette liste. * +* ctx = contexte de suivi de l'analyse courante. * +* scope = portée courante des variables locales. * +* out = zone d'enregistrement de la résolution opérée. [OUT] * +* * +* Description : Réduit une expression à une forme plus simple. * +* * +* Retour : Réduction correspondante, expression déjà réduite, ou NULL. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static bool g_scan_console_log_function_run_call(GScanConsoleLogFunction *item, GScanExpression **args, size_t count, GScanContext *ctx, GScanScope *scope, GObject **out) +{ + bool result; /* Bilan à retourner */ + size_t i; /* Boucle de parcours #1 */ + LiteralValueType vtype; /* Type de valeur portée */ + GScanLiteralExpression *literal; /* Version plus accessible */ + bool boolean; /* Valeur booléenne */ + long long sinteger; /* Valeur entière signée */ + unsigned long long uinteger; /* Valeur entière non signée */ + const sized_string_t *string; /* Description du chaîne */ + size_t k; /* Boucle de parcours #2 */ + + result = true; + + if (count == 0) + goto done; + + for (i = 0; i < count && result; i++) + result = G_IS_SCAN_LITERAL_EXPRESSION(args[i]); + + if (!result) + goto done; + + for (i = 0; i < count; i++) + { + literal = G_SCAN_LITERAL_EXPRESSION(args[i]); + + vtype = g_scan_literal_expression_get_value_type(literal); + + switch (vtype) + { + case LVT_BOOLEAN: + result = g_scan_literal_expression_get_boolean_value(literal, &boolean); + if (result) + fprintf(stderr, "%s", boolean ? "true" : "false"); + break; + + case LVT_SIGNED_INTEGER: + result = g_scan_literal_expression_get_signed_integer_value(literal, &sinteger); + if (result) + fprintf(stderr, "0x%llx", sinteger); + break; + + case LVT_UNSIGNED_INTEGER: + result = g_scan_literal_expression_get_unsigned_integer_value(literal, &uinteger); + if (result) + fprintf(stderr, "0x%llx", uinteger); + break; + + case LVT_STRING: + result = g_scan_literal_expression_get_string_value(literal, &string); + for (k = 0; k < string->len; k++) + { + if (isprint(string->data[k])) + fprintf(stderr, "%c", string->data[k]); + else + fprintf(stderr, "\\x%02hhx", string->data[k]); + } + break; + + default: + break; + + } + + } + + fprintf(stderr, "\n"); + + done: + + if (result) + *out = G_OBJECT(g_scan_literal_expression_new(LVT_BOOLEAN, (bool []){ result })); + + return result; + +} diff --git a/src/analysis/scan/items/console/log.h b/src/analysis/scan/items/console/log.h new file mode 100644 index 0000000..3e72ad8 --- /dev/null +++ b/src/analysis/scan/items/console/log.h @@ -0,0 +1,58 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * log.h - prototypes pour l'affichage de message à partir des conditions d'une règle + * + * Copyright (C) 2023 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * Chrysalide is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#ifndef _ANALYSIS_SCAN_ITEMS_CONSOLE_LOG_H +#define _ANALYSIS_SCAN_ITEMS_CONSOLE_LOG_H + + +#include <glib-object.h> + + +#include "../../item.h" + + + +#define G_TYPE_SCAN_CONSOLE_LOG_FUNCTION g_scan_console_log_function_get_type() +#define G_SCAN_CONSOLE_LOG_FUNCTION(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), G_TYPE_SCAN_CONSOLE_LOG_FUNCTION, GScanConsoleLogFunction)) +#define G_IS_SCAN_CONSOLE_LOG_FUNCTION(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), G_TYPE_SCAN_CONSOLE_LOG_FUNCTION)) +#define G_SCAN_CONSOLE_LOG_FUNCTION_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), G_TYPE_SCAN_CONSOLE_LOG_FUNCTION, GScanConsoleLogFunctionClass)) +#define G_IS_SCAN_CONSOLE_LOG_FUNCTION_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), G_TYPE_SCAN_CONSOLE_LOG_FUNCTION)) +#define G_SCAN_CONSOLE_LOG_FUNCTION_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), G_TYPE_SCAN_CONSOLE_LOG_FUNCTION, GScanConsoleLogFunctionClass)) + + +/* Mesure de la quantité de données scannées (instance) */ +typedef GRegisteredItem GScanConsoleLogFunction; + +/* Mesure de la quantité de données scannées (classe) */ +typedef GRegisteredItemClass GScanConsoleLogFunctionClass; + + +/* Indique le type défini pour un afficheur de messages arbitraires. */ +GType g_scan_console_log_function_get_type(void); + +/* Constitue une fonction d'affichage de messages quelconques. */ +GScanConsoleLogFunction *g_scan_console_log_function_new(void); + + + +#endif /* _ANALYSIS_SCAN_ITEMS_CONSOLE_LOG_H */ |